<?xml version="1.0" encoding="utf-8"?> 
 
  
 
   
  
  
   
 
   
 
   
   
  
 

public class MainActivity extends Activity { 
 private DrawerLayout mDrawerLayout; 
 private ListView mDrawerList; 
 
 private String[] mPlanetTitles; 
 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.activity_main); 
 
  mPlanetTitles = getResources().getStringArray(R.array.planets_array); 
  mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); 
  mDrawerList = (ListView) findViewById(R.id.left_drawer); 
 
  // set a custom shadow that overlays the main content when the drawer opens 
  mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START); 
  // set up the drawer's list view with items and click listener 
  mDrawerList.setAdapter(new ArrayAdapter(this, 
    R.layout.drawer_list_item, mPlanetTitles)); 
  mDrawerList.setOnItemClickListener(new DrawerItemClickListener()); 
 } 
//................................ 
} 

private class DrawerItemClickListener implements ListView.OnItemClickListener { 
 @Override 
 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
  selectItem(position); 
 } 
 } 
 
 private void selectItem(int position) { 
 // update the main content by replacing fragments 
 Fragment fragment = new PlanetFragment(); 
 Bundle args = new Bundle(); 
 args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position); 
 fragment.setArguments(args); 
 
 FragmentManager fragmentManager = getFragmentManager(); 
 fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit(); 
 
 // update selected item and title, then close the drawer 
 mDrawerList.setItemChecked(position, true); 
 mDrawerLayout.closeDrawer(mDrawerList); 
 } 

public void onClickDrawerOpened(View drawerView) { 
 if(!mDrawerLayout.isDrawerOpen(GravityCompat.START))//if not open ,open or close; 
 { 
 mDrawerLayout.openDrawer(mDrawerList); 
 } 
 else 
 { 
 mDrawerLayout.closeDrawer(mDrawerList); 
 } 
}